Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-01-2025 07:58

General

  • Target

    26640240020_Dekont20250115_3662553.exe

  • Size

    914KB

  • MD5

    94c0d019eeca32a87b093d9463112eb2

  • SHA1

    76f8629459c6e3af0c39f2995acdc90b46fd05f3

  • SHA256

    f9075b95c77272f8c8f1b8fa996374c9c8e6bc0e2a6f1cbb6cc2fab34b9b589c

  • SHA512

    366ff882501d653332f335cf857c146f84ca97ed389e595962696317f2611019ac1afb418df40bdba5b6733599ce96ed20eb3063fab2ac1115db6be364ff670b

  • SSDEEP

    12288:jce26bXDUGTyWXV7OJoSVwNwiQB5U6msPljzkLS77wa73lP7os47+mluEqK6g/92:jce28DzxOuOfQ6p8LSfwaJ0ay9R6CAB

Malware Config

Extracted

Family

vipkeylogger

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26640240020_Dekont20250115_3662553.exe
    "C:\Users\Admin\AppData\Local\Temp\26640240020_Dekont20250115_3662553.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2316
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\26640240020_Dekont20250115_3662553.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2996
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YgVyVbFVDEhC.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2604
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YgVyVbFVDEhC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC5FD.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2852
    • C:\Users\Admin\AppData\Local\Temp\26640240020_Dekont20250115_3662553.exe
      "C:\Users\Admin\AppData\Local\Temp\26640240020_Dekont20250115_3662553.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC5FD.tmp

    Filesize

    1KB

    MD5

    863574d09fa7ab136b0d55ba9582f450

    SHA1

    172a12e19c7571b00fb44b8f9c2ba7b0afcef70b

    SHA256

    f5276b91cdc0df5050d260585ea0ad77fe4bd8d8198530df254ec2928abbc774

    SHA512

    cd34b9673ea48a4dc399e3c69ab0111867777102ca9a2a1466b3f6c75ab9418cb751220c12c5ae9387975d2374cb05297a8bffb838075802b78a4c9a0ff5b758

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    91850967d2d8ebdf48b2f8de3ee04307

    SHA1

    7069030fbdb2cf00999315a6c3cb66d8504886ec

    SHA256

    42c7612549f4bf632cf7709c22409103811eb872e34db3664796e6e737ade430

    SHA512

    f30911eda998060ae2068547f194bc1e6b6045ce960bd4c3d3c6c61d5bfec8ecc58c6abc04859c614b03b023a032dad839bf089ee2250d2d286e67786dfd6629

  • memory/2076-28-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-31-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-21-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-23-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-25-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2076-29-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2076-19-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2316-6-0x0000000004780000-0x000000000480E000-memory.dmp

    Filesize

    568KB

  • memory/2316-1-0x00000000107A0000-0x000000001088A000-memory.dmp

    Filesize

    936KB

  • memory/2316-0-0x000000007489E000-0x000000007489F000-memory.dmp

    Filesize

    4KB

  • memory/2316-2-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2316-3-0x0000000000340000-0x0000000000366000-memory.dmp

    Filesize

    152KB

  • memory/2316-5-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2316-4-0x000000007489E000-0x000000007489F000-memory.dmp

    Filesize

    4KB

  • memory/2316-32-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB